LTC2633HTS8-LZ8#TRMPBF

Overview

The LTC2633HTS8-LZ8#TRMPBF is a dual 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, housed in an 8-lead TSOT-23 package. It features an integrated precision reference with a full-scale output of 2.5V and a temperature coefficient of 10ppm/°C. The device operates on a single 2.7V to 5.5V supply and communicates via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±0.5 LSB, a typical supply current of 0.4mA at 3V, and rail-to-rail output buffers. The part is guaranteed monotonic over the –40°C to 125°C automotive temperature range.

Feature Summary

• Dual 8-bit DACs with integrated 2.5V precision reference (10ppm/°C drift)
• Rail-to-rail output buffers with ±0.5 LSB maximum INL error
• I²C interface supporting 100kHz and 400kHz clock rates
• Power-on reset to zero-scale for consistent system initialization

Applications

• Mobile communications systems
• Process control and industrial automation
• Power supply margining
• Portable equipment
• Automotive electronics

Procurement Notes

Verify the #TRMPBF suffix indicates a 500-unit tape and reel packaging configuration, distinct from the standard 2,500-unit TRPBF variant. Confirm the H-grade designation aligns with the required –40°C to 125°C operating temperature range for the specific application environment.

Selection Notes

Select this component when a compact dual-channel solution with low power consumption (0.4mA) and high accuracy (±0.5 LSB INL) is required. Ensure the system supply voltage falls within the 2.7V to 5.5V range compatible with the LTC2633-L series. Consider the external reference capability if a different full-scale voltage than 2.5V is needed.

Part Context

This part belongs to the LTC2633 family, which offers various resolution options (8-, 10-, and 12-bit) and power-on reset configurations. The LZ8 suffix specifically denotes the 8-bit resolution, zero-scale power-on reset behavior, and internal 2.5V reference setting. It shares the same physical footprint and interface logic as other variants in the series, facilitating design flexibility across different accuracy requirements.

Replacement Considerations

Direct substitutes within the same package and pinout include other LTC2633 variants such as LTC2633HTS8-LI8#TRMPBF (mid-scale reset) or LTC2633HTS8-HZ8#TRMPBF (4.096V reference). Verify that the reset state and reference voltage differences do not impact the downstream circuit operation during power-up.